Rv1949c, (MTCY09F9.15), len: 319 aa. Conserved hypothetical protein, partial ORF. Rv1949c and Rv1950c|MTCY09F9.14 are similar but frameshifted with respect to Rv2077c|MTCY49.16C|Q10685 hypothetical 33.3 kd protein (323 aa), FASTA scores: opt: 459, E(): 2.8e-16,(54.8% identity in 157 aa overlap). Cosmid sequence appears to be correct, genomic sequence is also frameshifted in Mycobacterium bovis strain AF2122/97. Similar to Mycobacterium tuberculosis hypothetical proteins: Rv2542,Rv2077c, Rv2797c, Rv0963c, etc.

Hypothetical protein; Rv1948c, (MTCY09F9.16), len: 116 aa. Hypothetical unknown protein. This region is a possible MT-complex-specific genomic island (See Becq et al.,2007).

Unknown protein; Sugar octanoyltransferase likely involved in the biosynthesis of mycobacterial methylglucose lipopolysaccharide (MGLP). Catalyzes the transfer of an octanoyl group from octanoyl-CoA to the C6 OH of the second glucose in diglucosylglycerate (DGG). DGG is the preferred acceptor, but to a lesser extent, GG (glucosylglycerate) can also be used as substrate. DGG and GG are the two earliest intermediates in MGLP biosynthesis.

Conserved exported protein; Esterase that preferentially hydrolyzes short-chain fatty acids, particularly pNP-acetate (C2) and pNP-butyrate (C4). Has also weak activity with pNP-hexanoate (C6) and pNP-octanoate (C8). It can also hydrolyze short-chain tryglycerides such as triacetin and tributyrin. Important for intracellular survival.

Possible exported protein; GDSL lipase that catalyzes the hydrolysis of p-nitrophenyl (pNP) esters. pNP-decanoate (C10) is the preferred substrate. It can also use pNP-octanoate (C8), pNP-dodecanoate (C12) and pNP- tetradecanoate (C14). Has lower activity with pNP-butyrate (C4), pNP- palmitate (C16) and pNP-stearate (C18). Does not show phospholipase A1 activity. Might help bacteria to utilize available lipids for its growth as well as provide resistance to various intracellular stresses by cell wall modulation resulting in enhanced intracellular survival.

Possible antitoxin VapB14; Putative antitoxin component of a possible type II toxin- antitoxin (TA) system. The cognate toxin is VapB14.

Possible toxin VapC14; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. The cognate antitoxin is VapB14 (By similarity); Belongs to the PINc/VapC protein family.

Probable replicative DNA helicase DnaB; Participates in initiation and elongation during chromosome replication; it exhibits DNA-dependent ATPase activity; Belongs to the helicase family. DnaB subfamily.

Rv1975, (MTV051.13), len: 221 aa. Conserved hypothetical protein, showing some similarity to AJ251435 hypothetical protein from Mycobacterium avium subsp. paratuberculosis (193 aa). Predicted to be an outer membrane protein (See Song et al., 2008).